Automate Security Updates

Currently, security updates are applied manually to each server. I'd like to use the unattended-upgrades package to automate this. The documentation for this can be found here: https://help.ubuntu.com/community/AutomaticSecurityUpdates.

The upside to this approach is that the servers will never be missing security patches to ensure that SimplyTestMe continues to be a good Internet neighbor.

The downside is that the updates might cause a service interruption if one of the updates were to cause a configuration change.